Storey C, Chopra I
Division of Microbiology and Antimicrobial Research Centre, University of Leeds, Leeds LS2 9JT, United Kingdom.
Antimicrob Agents Chemother. 2001 Jan;45(1):303-5. doi: 10.1128/AAC.45.1.303-305.2001.
Binding affinities of beta-lactam antibiotics for the three penicillin binding proteins (PBPs) from Chlamydia trachomatis were determined in vitro and compared with their antichlamydial activities. Mecillinam selectively inhibited PBP1, with a 50% inhibitory concentration for PBP1 binding (0.2 microg/ml) similar to the MIC (0.1 microg/ml) and minimum bactericidal concentration (0.25 microg/ml). Although the other beta-lactams inhibited a wider range of PBPs than mecillinam, their antichlamydial activities were inferior to that of mecillinam.
在体外测定了β-内酰胺类抗生素对沙眼衣原体三种青霉素结合蛋白(PBPs)的结合亲和力,并将其与它们的抗衣原体活性进行了比较。美西林选择性抑制PBP1,其对PBP1结合的50%抑制浓度(0.2微克/毫升)与最低抑菌浓度(0.1微克/毫升)和最低杀菌浓度(0.25微克/毫升)相似。尽管其他β-内酰胺类抗生素比美西林抑制的PBPs范围更广,但其抗衣原体活性却不如美西林。